Gas instant water heater in comparison
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Last updated on 19.10.2026
1
Ranein Propane Gas Tankless Water Heater, 3.6 GPM, 80,000 BTU, Indoor
Ranein
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9,9
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2
APUS Natural Gas Tankless Water Heater, 95,000 BTU, 4.42 GPM Indoor | Endless Hot Water for 2–3 Fixtures, 95–140°F Control, 120V, Anti-Freeze, LED Touchscreen, High Efficiency and Space Save
APUS
17% off
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9,8
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3
ThermoMate CZ422NG, Natural Gas Tankless Water Heater Indoor, Up to 5 GPM | 113,000 BTU, High Efficiency Instant On-Demand Hot Water for Bathroom, Kitchen, Residential, Multi-Point Heating
thermomate
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9,6
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4
Novieex Natural Gas Tankless Water Heater Up to 4.3 GPM 100,000 BTU, Indoor
NOVIEEX
10% off
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9,5
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5
FOGATTI Tankless Water Heater Natural Gas Outdoor On Demand CSA Certified | Max 8.1GPM 180,000BTU Instant Water Heater Whole House 3-5 outlets points ±1°F Water Servo Precision Smart Digital Display
FOGATTI
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9,5
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6
CAMPLUX 5L Portable Tankless Water Heater, 1.32 GPM Outdoor Propane Shower for Camping, RV, Off-Grid, Instant Hot Water with Folding Handle, Overheat Protection, Low Pressure Startup, AY132, White
CAMPLUX ENJOY OUTDOOR LIFE
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9,5
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7
Propane Tankless Water Heater, 4.74GPM 18L Indoor,Constant propane water heater,Instant Hot Propane Gas water heater with Multi-Protection
VELPAX
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9,4
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8
Rheem RTG Series 8.4 GPM Natural Gas Tankless Water Heater Outdoor | 180,000 BTUs High Efficiency On Demand, Continuous Hot Water | Non-Condensing
Rheem
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9,4
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9
Propane Tankless Water Heater, 4.74 GPM 18L Indoor, Instant Hot Propane Gas Water Heater, Constant propane water heater with Fahrenheit Digital Display,Multi-Protection
forimo
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9,3
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10
MIZUDO Natural Gas Tankless Water Heater, 180,000 BTU 7.9 GPM WiFi, Indoor
MIZUDO
15% off
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9,2
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You might also be interested in these gas instant water heater.
100,000 BTU ORBEK Natural Gas Tankless Water Heater, 4.3 GPM, Indoor
【Endless On-Demand Hot Water】The Orbek tankless water heater gas indoor delivers 100,000 BTU capacity with 4.3GPM high flow rate, featuring innovative 0.53GPM low-flow start technologyonly. It can provide a continuous supply of hot water to 2-3 outlets at the same time, making it suitable as a whole-house water heater or a practical gift for friends and family
$ 389.99
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To the product (1 offer)
8% off
RIWORY 102000 BTU Tankless Water Heater Propane Indoor, 4.3 GPM, 3/4" NPT
【4.3 GPM | 102,000 BTU】: Riwory tankless gas hot water heater can provide up to 4.3 GPM flow and 102,000 BTU heating capacity, which can delivers endless hot water on demand for 3-4 water points, can meet the daily use of residences
$ 329.99
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5% off
VEVOR RV Tankless Water Heater, 42000BTU, Instant Shower with 15 x 15 inches White Door and Remote Controller, Ideal for RVers' Family Everyday Use (Propane)
Rapid Instant Heating: The RV water heater offers 42,000 BTU of high power, delivering hot water quickly to meet your needs for showering, dishwashing, and more.
$ 188.02
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5% off
Tankless Water Heater Natural Gas, Indoor Max 4.3 GPM, 100,000 BTU, Instant Hot Water Heater for Home, Apartment, Commercial Setting, Vent Pipe Included, within 1℉ Stable Temp, LED Digital Display
High-Efficiency On-Demand Hot Water: The QERPRE tankless water heater gas delivers powerful 100,000 BTU with a 4.3 GPM flow rate, ensuring continuous hot water for 2-3 water points like bathrooms, kitchens, and wet bars. Ideal for households requiring reliable, energy-conscious solutions without preheating delays
$ 179.99
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Rinnai V53DeN Natural Gas Tankless Water Heater
Unlimited Hot Water For Your Family: Enjoy endless hot water with our Rinnai tankless hot water heater, providing a flow rate of 5.3 GPM to serve up to 4 appliances; Say goodbye to cold showers and hello to convenience with this efficient unit
$ 741.65
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26% off
Furrion Tankless Gas Water Heater, White, 2.4 GPM, 60,000 BTU, Antifreeze Protection, Propane w/Electric Ignition, Wall Thermostat, Retrofit RV Water Heater Upgrade, Safety Shutoff – FWH09AFA-AM
INSTANT HOT WATER — 2.4 gallons of hot water delivered to your RV faucets per minute and 60,000 BTU means your tankless hot water heater will keep up with the demands of a busy family
$ 625.00
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50% off
Vancepic Natural Gas Tankless Water Heater, Indoor Max 4.3 GPM | 100,000 BTU Instant Hot Water Heater
Powerful On-Demand Heating: 100,000 BTU & 4.3 GPM for this tankless water heater gas, supports 3-4 water points simultaneously, delivers endless hot water on demand with no waiting.
$ 199.00
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Hillhub Portable Propane Water Heater for Camping Instant Hot & Shower Pump | On Demand Water Heater with 4000mAh Battery Stable Temp for Outdoor Showering, Hiking Cleaning & RV, Included Showerhead Kit
【3s Instant Heating】 Boasting 20,500 BTU ultra-heating efficiency, camping water heater delivers lightning-fast heating in just 3 seconds, raising hot water temperature to 77°F (25°C) instantly—ideal for portable shower for camping or camping water heater. With hot water flow rate of 2.2-3L/min and gas consumption of 20MJ/h, perfect for outdoor use where reliable portable water heater is essential, no more waiting for hot water.
$ 359.98
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5% off
Heatrova Propane Gas Tankless Water Heater, 4.3 GPM, 102,000 BTU, 3/4" NPT | Indoor Propane Water Heater for 3–4 Fixtures, On-Demand Hot Water, Constant Temperature, Pure Copper Heat Exchanger
INSTANT HOT WATER FOR LARGER HOMES:This indoor propane (LPG) tankless water heater delivers instant hot water on demand with a powerful 4.3 GPM flow rate and 102,000 BTU heating capacity, providing endless hot water for 3–4 fixtures simultaneously. Ideal for showers, kitchens, and bathrooms in larger residential homes.
$ 331.55
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Natural Gas Tankless Water Heater, Outdoor Installation, Up to 5.3 GPM 130000 BTU On Demand Residential Natural Gas Instant Hot Water Heater Outdoor with Remote Controller, 110V,CSA Certificated,White
[Advantages of an Outdoor Tankless Natural Gas Water Heater] - It can be installed outdoors to save space and reduce safety risks compared to an indoor water heater; It does not need to wait 30 minutes for preheating compared to a tank water heater; A natural gas water heater is more energy efficient compared to an electric water heater and allows you to enjoy endless hot water
$ 419.99
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Reliance TS-540-GIH 199K Indoor Tankless Natural Gas Water Heater
Indoor Installations Only
$ 2,149.48
free shipping
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EXCEL TANKLESS GAS WATER HEATER Vent Free (LOW WATER PRESSURE STARTUP) 1.6 GPM PROPANE LPG
PROPANE GAS LPG UNIT
$ 229.00
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